OAR OAR Math Skills 2

Question 1

A boat travels 240 miles in 6 hours. At the same speed, how long will it take to travel 400 miles?

Accepted Answer

10 hours

Answer

Speed = 240/6 = 40 mph; time = 400/40 = 10 hours.

Question 2

What is the value of 3x − 7 when x = 5?

Accepted Answer

8

Answer

3(5) − 7 = 15 − 7 = 8.

Question 3

A rectangle has a length of 14 cm and a width of 9 cm. What is its perimeter?

Accepted Answer

46 cm

Answer

Perimeter = 2(14 + 9) = 2(23) = 46 cm.

Question 4

Which of the following is equivalent to 5²× 5³?

Accepted Answer

5⁵

Answer

When multiplying powers with the same base, add exponents: 5^(2+3) = 5⁵.

Question 5

If 40% of a number is 56, what is the number?

Accepted Answer

140

Answer

0.40 × n = 56, so n = 56 / 0.40 = 140.

OAR Test Practice Test